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No. 606,474. Patented June 28, 1898.

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DE WITT C. PRESCOTT.

ROLLING APPARATU$. I

No. 606,474. Patented'June 28, 1898.

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ANITED TATES ATENT FICE.

DE IVIIT CLINTON PRESCOTT, OF DULUTH, MINNESOTA, ASSIGNOR TO THE YORKSTRUCTURAL STEEL COMPANY, OF NEW YORK, N. Y.

ROLLING APPARATUS.

SPECIFICATION forming part of Letters Patent NO. 606,474, dated June 28,1898.

Application filed March 22, 1895- Serial No. 542,757. (No model.)

To all whom it may concern.-

Be it known that I, DE WVITT CLINTON PRES- COTT, of Duluth, in thecountyof St. Louis and State of Minnesota, have invented certain new anduseful Improvements in Roll- .ing Apparatus, of which the following is aspecification.

The present invention relates to rolling mills which embody in theirconstruction a plurality of sets of opposed rolls which act upon andreduce a slab of iron or steel to a finished product-as, for instance,that form known as an I-beam.

The object of the invention is to provide for and in a mill of thisclass a construction which will permit each set of rolls to be adj ustedindependently of the other set, as well as permitting the several setsto be adjusted collectively.

I will describe a rolling apparatus or mill embodying my invention andthen point out the novel features in the claims.

In the accompanying drawings, Figure 1 is a side elevation of a rollingapparatus embodying my improvement. Fig. 2 is a plan View thereof. Fig 3is a transverse section on line 00 00, Fig. 1.

Similar letters of reference designate corresponding parts in thefigures.

I have shown my invention as being em:

bodied, for the sake of illustration in a roll ing apparatus of the formand construction pointed out in Patent No. 410,724, granted September10, 1889, to L. D. York, and to which I refer for a more detaileddescription of the parts common to the two inventions. I do not,however, in'so illustrating and describing it limit myself to theparticular apparatus disclosed in that patent, but wish to cover theimprovement as applied to any apparatus, of which the one shown in thepatent is a type as regards the presence of a plurality of sets offorming-rolls.

Referring'to the drawings, A A are the upper and lower rolls, and B Bare the side rolls, deriving motion from any. suitable source. The rollsA A are, as usual, supported in housings O O to have an adjustmenttoward and away from each other, while the rolls B B maybe carried inside blocks D D, the latter being movable in side frames E E.

In the process of rolling structural shapes-- 6. g., the so-called'I-beam -it is necessary to adjust the upper and lower rolls A A towardand away from each other, as well as to impart to the side rolls B B acorresponding movement, in order that the slab may be formed upon allsides and reduced to the desired dimensions of the structural shape;Occasion may also arise during the rolling of structural shapes when itis desirable that, instead of adjusting the rolls A A B B all. together,the rolls A, A should be adjusted while the rolls B B remain stationary,or, conversely, the rolls B B should be adjusted while the rolls A Aremain stationary. describe the means whereby these several adjustmentsmaybe effectednamely, a col- I willnow lective adjustment of all therolls or anin.de-

dependent adjustment of the rolls A A or an independent adjustment ofthe. rolls B, B.

F F are screws entering nuts secured to the upper portion of thehousings O O and by meansof which the upper roll A may be moved towardor away from the lower roll A, as pointed out in the before-mentionedpatent.

To each screw F F, secured to its upper extremity and projectingvertically upward therefrom, is a short shaft G, having a bearing in abushing g, which is carried by a standard g, surmounting the housing 0.The shaft G is provided with a spline g engaging in a longitudinalrecess in the bearing-surface of the bushing g. Consequently as thescrew F is rotated the shaft G will be carried lengthwise of the bushingg, rotating with the latter, while to prevent a lengthwise movement ofthe bushing itself I may form the bushing with a circumferential groove9 in which projects a circular tonguegr from each mem- A worm' IOO Theseengines would be provided with reversing mechanism.

A horizontal shaft I is arranged at the side of the vertical shafts G G.This shaft is driven from the engines H through gears h and carriesworms I I meshin res ectivel r with the worm-wheels G G. The worms I Iare mounted loosely upon the shaft I, but may be each rigidly securedthereto by a sliding clutch K, here shown to be of an ordinary type, or,in other words, a jaw-clutch comprising a clutch member 70, attached toeach worm I, and a clutch member is, movable lengthwise of the shaft I,but compelled to rotate therewith by an engaging feather and groove, theopposed faces of the clutch members being provided with engaging teethor jaws. For operating these adjustable members 7c and 7c I providethesame'with circumferential grooves into which a yoke 70 extends. It isof coursev necessary that the members 70 k be moved toward and away fromeach other simultaneously if the clutches are located between the shaftsG,

since the worms'I I and the shaft I should be in operative connection ordisengagement both at the same time. -To this end I provide separatebars 70 k movable lengthwise in convenient bearings and to which theyokes k are secured, the bars being themselves moved to and fro by ahand-lever 7c, fulcrumed to a suitable stationary part. Connecting-rodsk 70 connect the bars 76* k to the hand-lever 70 on opposite sides ofits fulcrum-point.

Extending laterally from each housing C is a short rotary shaft L,supported in suitable bearings and carrying a spur-wheel L, which isrigidly secured to the shaft and engages with a pinion Z, carried by theshaft I. Each pinion Z is in operative connection with the f shaft I,through the medium of a clutch L Whose construction may be similar tothat already described.

From the shafts L power is derived for effecting the adjustment of theside rolls B B. To secure this result, I'provide each shaft L with abevel-pinion L coacting with a bevel spur-wheel L securcd to the upperend of an inclined shaft L These inclined shafts may actuatescrews M, bywhich the blocks D D, and consequently the side rolls 13B, are

carried toward and away from each other, as pointed out in the patentalready referred to.

able blocks D D they may be rigidly secured to a stationary support, aconstruction which is illustrated. In this case the shanks of the screwsM will engage with the hubs of the driving bevel-gears by aspline-and-keyway connection to permit of the lengthwise move- ,ment ofthe screw-shank through the gear. As it may be desirable to throw bothclutches L into and out of engagement independently, I may provide asystem of operati-ng-levers and sliding bars similar to that alreadydescribed in reference to clutches K K, comprising sliding bars m m,hand-levers ,m", and connecting-rods m and m.

As it may be necessary to shift the housings C O laterally to widen orlessen the distance between the same, the shafts I, L, and L will beprovided with keyways of sufficient length ito permit of this movement.It will be seen iby this construction that I provide means wherebyeither set of sideand top and bottom trolls may be adjustedindependently of the other and also bya manipulation of the propericlutches connections may be made sothat ,both sets of rolls may beoperated together.

Having described my invention, what I iiconsider as new, and desire tosecure by Letters Patent, is-

1. In a rolling apparatus, the combination ;with top and bottom rollsand side rolls, of a ;single power-shaft, worms and worm-wheels gwithwhich said worms engage to secure the Eadjustment of the top and bottomrolls, j clutches for operatively connecting with and gdisoonnectingsaid worms from said shaft, pinions driven by said power-shaft, anddriviing mechanism for securing the adjustment of the siderolls,.clutches for operatively con- Inecting said pinions with saidshaft and dis- ;connecting them therefrom, and means for Q operatingtheclutches, substantially as speci- Zfie'd.

2. In a rolling apparatus the combination 1 of the power-shaft I, theshafts G, G, driving the screws F, F, the worm-wheels G G splined to theshafts G, G, the worms I, I driven from the shaft I and engaging'with{the worm-wheels G, G, the clutches K, K the pinions Z Z driving theshafts L, L, and the clutches L L for operatively connecting the pinionsZ, Z, with the shaft I and disconnecting them therefrom, substantiallyas specified.

In testimony whereof I have signed my :name to this specification in thepresence of two subscribing witnesses.

DE WITT CLINTON PRESCOTT. Witnesses:

M. O. KINGSBURY,

WM. ANDREW.

